12251447479 has 2 divisors, whose sum is σ = 12251447480. Its totient is φ = 12251447478.

The previous prime is 12251447471. The next prime is 12251447489. The reversal of 12251447479 is 97474415221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12251447479 - 2³ = 12251447471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12251447471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6125723739 + 6125723740.

It is an arithmetic number, because the mean of its divisors is an integer number (6125723740).

Almost surely, 2^12251447479 is an apocalyptic number.

12251447479 is a deficient number, since it is larger than the sum of its proper divisors (1).

12251447479 is an equidigital number, since it uses as much as digits as its factorization.

12251447479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 46.

The spelling of 12251447479 in words is "twelve billion, two hundred fifty-one million, four hundred forty-seven thousand, four hundred seventy-nine".